JP3568077B2 - Antibacterial hypoallergenic cosmetics - Google Patents

Antibacterial hypoallergenic cosmetics Download PDF

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JP3568077B2
JP3568077B2 JP22061096A JP22061096A JP3568077B2 JP 3568077 B2 JP3568077 B2 JP 3568077B2 JP 22061096 A JP22061096 A JP 22061096A JP 22061096 A JP22061096 A JP 22061096A JP 3568077 B2 JP3568077 B2 JP 3568077B2
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antibacterial activity
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antibacterial
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JPH1045557A (en
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篤子 今堀
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Noevir Co Ltd
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Noevir Co Ltd
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Description

【0001】
【産業上の利用分野】
この発明は、優れた抗菌性を有し、細菌,カビなどの微生物により汚染されることのない、安定で且つ皮膚に対する刺激性の低い化粧料に関する。さらに詳しくは、N−長鎖アシル塩基性アミノ酸誘導体及びその酸付加塩の1種又は2種以上と、生薬の一種である地楡の抽出物又は粉砕物を併用してなる抗菌性の高い低刺激化粧料に関する。
【0002】
【従来の技術】
従来、化粧水,乳液,クリーム等、水を含有する化粧料においては、製造時及び使用時における細菌,カビ等の微生物の混入による変質を防止するため、種々の防腐防黴剤が使用されてきた。かかる防腐剤としては、イソプロピルメチルフェノール,パラオキシ安息香酸エステル,フェノキシエタノール,ヒノキチオール等のフェノール類、安息香酸及びその塩,サリチル酸及びその塩,デヒドロ酢酸及びその塩,ソルビン酸及びその塩等の酸類、塩化ベンザルコニウム,塩化ベンゼトニウム,塩化アルキルトリメチルアンモニウム等の第4級アンモニウム類、塩酸アルキルアミノエチルグリシン,塩化ステアリルヒドロキシエチルベタインナトリウム等の両性界面活性剤、感光素等が用いられている。
【0003】
しかし、上記の防腐防黴剤には皮膚に対する一次刺激性,感作性或いは光感作性の報告されているものが多く、安全性の面から化粧品原料基準において配合量が規制されており、実際に有効な抗菌活性を示す量を配合できないことが多い。さらに、皮膚に対して発赤,発疹,浮腫といった刺激或いは感作反応を示さなくても、化粧料を使用する際に刺すような痛みやヒリヒリする感じ又はチクチクする感じといった不快感を与えることも知られている。また、化粧料の基剤や他の配合成分との相互作用により、充分な抗菌活性を示さない場合もある。
【0004】
例えば、イソプロピルメチルフェノール,パラオキシ安息香酸エステル,ソルビン酸などの油溶性防腐防黴剤は、高分子増粘剤や粉体を含む化粧料に配合した場合、吸着などにより抗菌活性が低下する。また、界面活性剤を含有する化粧料においては、界面活性剤ミセルへの取り込みによりやはり抗菌活性の低下が見られる。かといって、充分な抗菌活性を期待して多量を配合すると、低温での結晶析出等、製品の安定性上の問題が生じる。
【0005】
また、安息香酸塩,サリチル酸塩,デヒドロ酢酸塩等の水溶性防腐防黴剤は、化粧料のpHが弱酸性でないと有効ではなく、酸性下にて使用する場合であっても、酸性が強くなるに従い水に対する溶解度が低下し、結晶の析出を来すことがある。
【0006】
さらに、第4級アンモニウム類や両性界面活性剤については、皮膚刺激性,願粘膜刺激性が認められたり、発泡しやすい,酸性側で抗菌活性が低下する,陰イオン性物質との相互作用などの実使用上の問題がある。一方、親水性の陽イオン性界面活性剤として汎用されるN−長鎖アシル塩基性アミノ酸誘導体及びその酸付加塩は、殺菌性洗浄剤として古くから知られており(特公昭51−5413)、それらの一種であるN−ココイル−L−アルギニンエチルエステル−DL−ピロリドンカルボン酸塩は、「CAE」の商品名で市販されているが、化粧料のように多種類の原料を含有する複雑な系では、配合した濃度に対して期待したとおりの抗菌効果が得られず、十分な抗菌作用を示すまで増量した場合には安定性が低下するという問題があった。
【0007】
【発明が解決しようとする課題】
従って、本発明においては、化粧料基剤や他の配合成分により抗菌活性が低下することなく、有効な抗菌作用を示し、且つ可能な限り防腐防黴剤の配合量を少なくして、皮膚に対し一次刺激性や感作性を示さないだけでなく、化粧料使用時の刺すような痛みやヒリヒリ感,チクチク感といった不快感をも与えない化粧料を得ることを目的とした。
【0008】
【課題を解決するための手段】
上記課題を解決するため、安定性が高く、皮膚に対する刺激性の低い防腐防黴系を検討した結果、N−長鎖アシル塩基性アミノ酸誘導体及びその酸付加塩の1種又は2種以上と、生薬の一種である地楡の抽出物又は粉砕物を併用して配合することにより、相乗的に抗菌活性が向上するばかりか、皮膚に対する刺激性や不快感が著しく低減することを見い出し、本発明を完成するに至った。
【0009】
N−長鎖アシル塩基性アミノ酸誘導体及びその酸付加塩としては、次の一般式(1),一般式(2)及び一般式(3)で示されるものより、1種又は2種以上を選択して用いる。
【化1】
【化2】
【化3】
(但し、一般式(1)〜一般式(3)中、RCOは炭素数6〜20の飽和又は不飽和脂肪酸残基、Xは−NH,−OCH,−OC,−OC,−OC又は−OCHを示し、一般式(2)中、nは3又は4を示す。)
【0010】
例えば、N−カプロイル−L−アルギニンメチルエステル塩酸塩,N−ラウロイル−L−アルギニンエチルエステル−DL−ピロリドンカルボン酸塩,N−パルミトイル−L−アルギニンエチルエステル塩酸塩,N−ココイル−L−アルギニンエチルエステル−DL−ピロリドンカルボン酸塩,N−カプロイル−L−リジンメチルエステル塩酸塩,N−ラウロイル−L−リジンエチルエステル−DL−ピロリドンカルボン酸塩,N−ミリストイル−L−リジンプロピルエステル塩酸塩,N−ステアロイル−L−ヒスチジンメチルエステル塩酸塩,N−オレオイル−L−ヒスチジンエチルエステル−DL−ピロリドンカルボン酸塩などが例示される。
【0011】
これらN−長鎖アシル塩基性アミノ酸誘導体及びその酸付加塩の1種又は2種以上は、通常0.01〜0.5重量%で抗菌活性を示すが、化粧料のような複雑な系に添加した場合には、十分な抗菌作用が認められないことが多い。しかし、本発明においては相乗的な抗菌活性の増強が認められ、0.001〜0.2重量%程度の低濃度で十分な抗菌作用を示す。
【0012】
本発明において、N−長鎖アシル塩基性アミノ酸誘導体及びその酸付加塩と併用する生薬の一種である地楡は、バラ科ワレモコウ(Sanguisorba officinalis L.、Sanguisorba tenuifolia Fisch et Link、Sanguisorba applanataSanguisorba alpina)の根及び根茎で、止血収れん剤として古くから利用されてきた。ワレモコウには、ヒアルロニダーゼ失活効果(特開平2−11520)及び抗プラスミン効果(特開平1−61415)がすでに知られている。
【0013】
地楡は化粧料の剤型に応じて粉砕物をそのまま用いてもよいが、溶媒で抽出したものを用いてもよい。これらの生薬及び植物の抽出物を得る溶媒としては、水,エタノール,1,3−ブチレングリコール,プロピレングリコール,グリセリン,ジグリセリンから選ばれる1種又は2種以上が好ましい。抽出の際の地楡と溶媒との比率は特に限定されるものではないが、地楡1に対して溶媒2〜1000重量倍、特に抽出操作、効率の点で5〜100重量倍が好ましい。また、抽出温度は室温−常圧下で、溶剤の沸点以下の範囲とするのが便利であり、抽出時間は抽出温度などによって異なるが、2時間〜2週間の範囲とするのが好ましい。
【0014】
また、このようにして得られた地楡抽出物は、抽出物をそのまま用いることもでき、また防腐防黴作用を失わない範囲内で脱臭,精製等の操作を加えてから配合することもでき、さらにはカラムクロマトグラフィー等を用いて分画物としてもよい。さらに、これらの抽出物や脱臭,精製物、分画物は、これらから溶媒を除去することによって乾燥物とすることもでき、さらにアルコールなどの溶媒に可溶化した形態、或いは乳剤の形態で提供することができる。配合量は、0.01〜20.0重量%が適当である。
【0015】
【作用】
N−長鎖アシル塩基性アミノ酸誘導体及びその酸付加塩単独では、0.01〜0.5重量%の範囲で抗菌活性が認められるが、化粧料のような複雑な混合系に添加した場合には期待したとおりの抗菌作用が得られないことが多い。しかしながら、本発明においては相乗的な抗菌作用の増強が認められるため、N−長鎖アシル塩基性アミノ酸誘導体及びその酸付加塩の1種又は2種以上を0.001〜0.2重量%と低濃度配合した場合でも十分な抗菌作用を発揮する。また生薬の一種である地楡の抽出物又は粉砕物を併用することにより、皮膚に対する刺激性,感作性、又は使用時に生じる刺すような痛み,ヒリヒリ感,チクチク感といった不快感を大幅に低減しうる。
【0016】
【発明の実施の形態】
本発明にかかる発明は、特に水を多く含有する系や、外相が水相である水中油型乳化系に有用であり、化粧水,乳液,クリームなどの皮膚化粧料、乳液状またはクリーム状のメイクアップベースローション,ファンデーション、乳化型アイカラー又はチークカラー、水性懸濁型又は乳化型のアイライナー,マスカラ等のメイクアップ化粧料、クレンジングローション,クレンジングジェル,液体石鹸などの洗浄化粧料、シャンプー,ヘアリンスなどの毛髪用化粧料等として提供できる。
【0017】
【実施例】
さらに本発明の特徴について、実施例により詳細に説明する。
【0018】
[実施例1]化粧水

Figure 0003568077
製法:(1)〜(7)の各成分を順次(8)に添加し、均一に混合して調製する。
【0019】
[実施例2]乳液
Figure 0003568077
製法:まず、(1)〜(6)の油相を混合し、加熱融解して75℃に保つ。一方(7)〜(11)の水相を混合し、加熱溶解して75℃とし、これに前記油相を攪拌しながら添加して乳化する。冷却後40℃にて(12),(13)を添加,混合する。
【0020】
[実施例3]クリーム
Figure 0003568077
製法:(1)〜(7)の油相成分を混合,加熱して75℃とする。一方、(8)〜(10)の水相成分を混合,加熱して75℃とし、これに前記油相を添加して乳化し、冷却後40℃にて(11),(12)を添加する。
【0021】
[実施例4]メイクアップベースクリーム
Figure 0003568077
製法:(10)〜(12)を(4)で混練し、これを(5)〜(7)の水相に添加,混合し、70℃に加熱する。一方、(1)〜(3)の油相成分を混合,加熱して70℃とし、これを前記水相に攪拌しながら添加して乳化する。乳化後冷却して40℃にて(8),(9)を添加する。
【0022】
[実施例5]乳液状ファンデーション
Figure 0003568077
製法:(15)〜(19)の顔料を混合後、粉砕機により粉砕する。(12)を70℃に加熱し、(8)を加えてよく膨潤させ、これにあらかじめ(7)を(9)に分散させたものを加え、さらに(10),(11)を添加し、溶解させる。(1)〜(6)の油相は混合し、加熱融解して80℃とする。前記顔料を水相に攪拌しながら加え、コロイドミルを通して75℃とし、前記油相を攪拌しながら加えて乳化し、冷却後40℃にて(13),(14)を添加する。
【0023】
[実施例6]クリーム状ファンデーション
Figure 0003568077
製法:(13)〜(19)の顔料を混合後、粉砕機により粉砕する。(7)〜(10)を混合,溶解させ、加熱する。(1)〜(6)の油相は混合し、加熱溶解して80℃とする。前記顔料を水相に攪拌しながら加え、コロイドミルを通して75℃とし、前記油相を攪拌しながら加えて乳化し、冷却後40℃にて(11),(12)を添加する。
【0024】
[実施例7]乳化型アイカラー
Figure 0003568077
製法:(5)〜(8)の水相を混合,溶解して加熱し、これにあらかじめ混合,粉砕した(12),(13)を添加,分散し、75℃に加熱する。これにあらかじめ混合,加熱して均一とした(1)〜(4)を攪拌しながら添加して乳化し、冷却後(9)〜(11)を添加,混合する。
【0025】
[実施例8]乳化型チークカラー
Figure 0003568077
製法:(10)〜(13)の水相を混合,溶解して加熱し、これにあらかじめ混合,粉砕した(16),(17)を添加,分散し、75℃に加熱する。これにあらかじめ混合,加熱して均一とした(1)〜(9)を攪拌しながら添加して乳化し、冷却後(14),(15)を添加,混合する。
【0026】
[実施例9]乳化型アイライナー
Figure 0003568077
製法:(1)〜(4)の油相成分を混合・加熱して溶解させる。これに(5)〜(8)の水相を混合,加熱し、攪拌しながら加えて乳化する。次いで、この乳化物に(11)〜(13)を加え、コロイドミルを通して分散させた後冷却し、40℃にて(9),(10)を加える。
【0027】
[実施例10]水性懸濁型マスカラ
Figure 0003568077
製法;(9)に(2)〜(5)を添加して溶解させ、次いで(6)〜(8)を添加し、コロイドミルを通して分散させる。これに(1)を加え、均一に分散させる。
【0028】
[実施例11]シャンプー
Figure 0003568077
製法;(1)〜(6)を順次(7)に添加し、均一に混合,溶解させる。
【0029】
[実施例12]ヘアリンス
Figure 0003568077
製法;(8)に(3)〜(5)を加え、70℃に加熱する。一方(1),(2)を混合,溶解し、70℃に加熱する。この油相を攪拌しながら先に調製した水相に徐々に加えて予備乳化し、ホモミキサーを加えて均一とした後冷却し、40℃にて(6),(7)を添加する。
【0030】
[実施例13]スクラブ入り洗顔料
Figure 0003568077
製法:(1)〜(6)の油相及び(8),(9)の水相をそれぞれ75℃に混合加熱溶解した後、油相に水相を加えてケン化する。冷却後40℃で(10),(11)を添加して混合する。
【0031】
次に、上記の実施例1〜13について、抗菌活性,皮膚刺激性及び使用時の不快感について評価を行った。また同時に表1に示す比較例についても同様に評価を行った。
【0032】
【表1】
Figure 0003568077
【0033】
(1)抗菌活性の評価 細菌として、大腸菌(Escherichia coli),黄色ブドウ球菌(Staphylococcus aureus),緑濃菌(Pseudomonas aeruginosa)、真菌としてカンジダ(Candida albicans),黒カビ(Aspergillus niger)を用い、試料1g当たり細菌は10個,真菌は10個を植菌し、37℃及び25℃でそれぞれ培養して、2週間後の生菌数を測定した。また、実施例11,実施例12及び比較例11,比較例12については細菌として緑濃菌(Pseudomonas aeruginosa)、真菌としては上記のカンジダ(Candida albicans),黒カビ(Aspergillus niger)及びフケ菌(Pityrosporum ovale)を用いて、実施例13及び比較例13については細菌としてアクネ菌(Propionibacterium acnes)及び尋常変形菌(Proteus vulgaris)を真菌としてはカンジダ(Candida albicans)及び黒カビ(Aspergillus niger)を用いて同様に試験した。なお、抗菌活性は2週間後に、細菌については死滅した場合、真菌については生菌数が1/1000となった場合に十分であると判断される。評価結果を表2〜表4に示した。
【0034】
【表2】
Figure 0003568077
【0035】
表2より本発明の実施例1〜10においては、いずれも細菌及び真菌の双方に対して十分な抗菌活性が認められていた。これに対し、N−長鎖アシル塩基性アミノ酸誘導体の酸付加塩,地楡の何れか一方しか含有しない比較例においては、細菌及び真菌のいずれに対しても十分な抗菌活性の認められたものは皆無であった。
【0036】
【表3】
Figure 0003568077
【0037】
表3より、本発明の実施例11及び実施例12はいずれも、細菌及び真菌に対し、良好な抗菌活性を示すことが認められる。また、フケ菌に対して有効な殺菌効果を有することから、フケ防止効果をも発揮することが示される。これに対し、比較例では細菌及び真菌のいずれに対しても十分な抗菌活性は認められていなかった。
【0038】
【表4】
Figure 0003568077
【0039】
表4においても、本発明の実施例13が十分な抗菌活性を示し、良好な殺菌効果を発揮することが認められる。また、アクネ菌に対しても殺菌効果を有することから、ニキビ予防効果をも発揮することが示される。一方比較例13は、十分な抗菌活性を示していなかった。
【0040】
(2)皮膚刺激性の評価 各試料について、男性パネラー20名を用いて48時間の閉塞貼付試験を行い、表5に示す判定基準により評価し、20名の皮膚刺激指数の平均値を求めた。なお、実施例11〜実施例13及び比較例11〜比較例13については、1.0重量%水溶液にて評価を行った。
【0041】
【表5】
Figure 0003568077
【0042】
(3)使用時の不快感の評価 女性パネラー20名を一群とし、各群に各試料をそれぞれ使用させ、塗布後30秒から1分後の間に感じる刺すような痛み、ヒリヒリ感,チクチク感といった不快感について評価させた。評価結果は、「非常に強く感じる;5点」,「やや強く感じる;4点」,「感じる;3点」,「少し感じる;2点」,「微妙に感じる;1点」,「感じない;0点」として評価し、20名の平均値にて示した。なお、本評価についても、実施例11〜実施例13及び比較例11〜比較例13については、1.0重量%水溶液にて評価を行った。以上の結果は表6にまとめて示した。
【0043】
【表6】
Figure 0003568077
【0044】
表6において、本発明の実施例は、いずれも皮膚刺激性,使用時の不快感ともにほとんど認められておらず、使用時の不快感についても微妙に感じたパネラーが存在する程度であった。N−長鎖アシル塩基性アミノ酸誘導体の酸付加塩を0.2重量%含有する実施例1,実施例3及び実施例9においても、非常に低く抑えられていた。これに対して、N−長鎖アシル塩基性アミノ酸誘導体の酸付加塩0.2重量%とエタノール7.0重量%を含有する比較例1,前記付加塩0.15重量%とプロピレングリコール10.0重量%を含有する比較例4及び前記付加塩015重量%と樹脂エマルションを含有する比較例10において、わずかな紅斑或いは浮腫の発生が認められ、皮膚刺激指数が若干高くなっていた。また、これらを使用した群で不快感を感じたパネラーが多くなっていた。更に、前記付加塩0.05重量%を含有するシャンプーである比較例11使用群においても、かなりのパネラーが使用時に不快感を感じていた。また、界面活性剤含有量の高い比較例12及び比較例13において、皮膚刺激指数,使用時の不快感とも高い価であった。
【0045】
【発明の効果】
以上詳述したように、本発明により抗菌作用が相乗的に強化され、しかも皮膚刺激性のみならず、使用時の刺すような痛み、ヒリヒリ感,チクチク感といった不快感もほとんど感じられない抗菌性化粧料を得ることができた。[0001]
[Industrial applications]
The present invention relates to a cosmetic composition which has excellent antibacterial properties, is not contaminated by microorganisms such as bacteria and mold, is stable and has low skin irritation. More specifically, a low antibacterial activity is obtained by using one or more of an N-long-chain acyl-basic amino acid derivative and an acid addition salt thereof together with an extract or pulverized product of Jiyu, a kind of crude drug. Related to irritating cosmetics.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in cosmetics containing water, such as lotions, emulsions, creams, etc., various antiseptic / antifungal agents have been used in order to prevent deterioration caused by the incorporation of microorganisms such as bacteria and mold during production and use. Was. Examples of such preservatives include phenols such as isopropylmethylphenol, paraoxybenzoate, phenoxyethanol and hinokitiol; benzoic acid and its salts; salicylic acid and its salts; dehydroacetic acid and its salts; sorbic acid and its salts; Quaternary ammoniums such as benzalkonium, benzethonium chloride and alkyltrimethylammonium chloride, amphoteric surfactants such as alkylaminoethylglycine hydrochloride and sodium stearylhydroxyethylbetaine chloride, and photosensitizers are used.
[0003]
However, many of the above-mentioned antiseptic / antifungal agents have been reported as primary irritants, sensitizers or photosensitizers on the skin, and the amount of cosmetics is regulated in terms of cosmetic raw materials from the viewpoint of safety. In many cases, an amount showing an actually effective antibacterial activity cannot be blended. Furthermore, it is known that even if the skin does not show a stimulating or sensitizing reaction such as redness, rash, or edema, it may cause discomfort such as stinging, tingling or tingling when using the cosmetic. Have been. Further, due to the interaction with the base material of the cosmetic or other components, the composition may not show sufficient antibacterial activity.
[0004]
For example, when oil-soluble preservatives and fungicides such as isopropylmethylphenol, paraoxybenzoate, and sorbic acid are added to cosmetics containing a polymer thickener or powder, the antibacterial activity decreases due to adsorption or the like. Further, in cosmetics containing a surfactant, the antibacterial activity is also reduced due to incorporation into surfactant micelles. On the other hand, if a large amount is blended in anticipation of a sufficient antibacterial activity, problems in product stability such as crystal precipitation at low temperatures occur.
[0005]
Further, water-soluble preservatives and fungicides such as benzoate, salicylate and dehydroacetate are not effective unless the pH of the cosmetic is weakly acidic. As the solubility becomes lower, the solubility in water may be reduced, and crystals may be precipitated.
[0006]
In addition, quaternary ammoniums and amphoteric surfactants have skin irritation and mucous membrane irritation, are prone to foaming, have reduced antibacterial activity on the acidic side, and interact with anionic substances. There is a problem in actual use. On the other hand, N-long-chain acyl basic amino acid derivatives and their acid addition salts, which are widely used as hydrophilic cationic surfactants, have long been known as germicidal detergents (JP-B-51-5413). One of them, N-cocoyl-L-arginine ethyl ester-DL-pyrrolidone carboxylate, is marketed under the trade name "CAE", but is a complex product containing many kinds of raw materials such as cosmetics. In the system, there was a problem that the antibacterial effect as expected with respect to the compounded concentration was not obtained, and when the amount was increased until sufficient antibacterial activity was exhibited, the stability was lowered.
[0007]
[Problems to be solved by the invention]
Accordingly, in the present invention, the antibacterial activity is not reduced by the cosmetic base or other compounding components, the compound shows an effective antibacterial effect, and the compounding amount of the antiseptic and fungicide is reduced as much as possible, On the other hand, an object of the present invention is to provide a cosmetic composition which does not show primary irritation or sensitization but also does not cause discomfort such as stinging, tingling or tingling when using the cosmetic.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, as a result of examining an antiseptic and antifungal system having high stability and low irritation to the skin, one or more of N-long-chain acyl-basic amino acid derivatives and acid addition salts thereof, The present invention was found to not only synergistically improve antibacterial activity but also significantly reduce irritation and discomfort to the skin by combining and combining an extract or pulverized product of Jiyu, a kind of crude drug. Was completed.
[0009]
As the N-long-chain acyl basic amino acid derivative and its acid addition salt, one or more kinds are selected from those represented by the following general formulas (1), (2) and (3). Used.
Embedded image
Embedded image
Embedded image
(However, in the general formulas (1) to (3), RCO is a saturated or unsaturated fatty acid residue having 6 to 20 carbon atoms, and X is -NH 2 , -OCH 3 , -OC 2 H 5 , -OC 3 H 7 , —OC 4 H 9 or —OCH 2 C 6 H 5 , and in the general formula (2), n represents 3 or 4.)
[0010]
For example, N-caproyl-L-arginine methyl ester hydrochloride, N-lauroyl-L-arginine ethyl ester-DL-pyrrolidone carboxylate, N-palmitoyl-L-arginine ethyl ester hydrochloride, N-cocoyl-L-arginine Ethyl ester-DL-pyrrolidone carboxylate, N-caproyl-L-lysine methyl ester hydrochloride, N-lauroyl-L-lysine ethyl ester-DL-pyrrolidone carboxylate, N-myristoyl-L-lysine propyl ester hydrochloride , N-stearoyl-L-histidine methyl ester hydrochloride, N-oleoyl-L-histidine ethyl ester-DL-pyrrolidone carboxylate, and the like.
[0011]
One or more of these N-long-chain acyl-basic amino acid derivatives and acid addition salts thereof usually exhibit antibacterial activity at 0.01 to 0.5% by weight, but may be used in complex systems such as cosmetics. When added, sufficient antibacterial activity is often not observed. However, in the present invention, synergistic enhancement of the antibacterial activity is recognized, and a sufficient antibacterial effect is exhibited at a low concentration of about 0.001 to 0.2% by weight.
[0012]
In the present invention, Jiyu, a kind of crude drug used in combination with the N-long-chain acyl-basic amino acid derivative and the acid addition salt thereof, is a pet of the family Rosaceae ( Sanguisorba officinalis L., Sanguisorba tenuifolia Fischia santago sapana spore sap. ) Roots and rhizomes, which have long been used as hemostatic astringents. The hyaluronidase inactivating effect (JP-A-2-11520) and the anti-plasmin effect (JP-A-1-61415) have already been known for Waremoko.
[0013]
Jiyu may be used as it is as a pulverized product depending on the form of the cosmetic, or may be used as extracted with a solvent. As a solvent for obtaining these crude drugs and plant extracts, one or more selected from water, ethanol, 1,3-butylene glycol, propylene glycol, glycerin, and diglycerin are preferable. The ratio of the groundwater to the solvent at the time of extraction is not particularly limited, but is preferably 2 to 1000 times the weight of the groundwater 1 and more preferably 5 to 100 times the weight in terms of extraction operation and efficiency. The extraction temperature is conveniently in the range of room temperature to normal pressure and not higher than the boiling point of the solvent. The extraction time varies depending on the extraction temperature and the like, but is preferably in the range of 2 hours to 2 weeks.
[0014]
The soybean extract thus obtained can be used as it is, or can be blended after deodorizing and purifying operations within a range that does not lose the antiseptic and fungicidal action. Alternatively, a fraction may be obtained by column chromatography or the like. Furthermore, these extracts, deodorized, purified, and fractionated products can be dried by removing the solvent therefrom, and further provided in the form of a solution solubilized in a solvent such as alcohol or in the form of an emulsion. can do. An appropriate amount is 0.01 to 20.0% by weight.
[0015]
[Action]
The N-long-chain acyl basic amino acid derivative and its acid addition salt alone show an antibacterial activity in the range of 0.01 to 0.5% by weight, but when added to a complex mixture such as cosmetics. Often does not have the antibacterial action expected. However, in the present invention, synergistic enhancement of the antibacterial action is recognized, so that one or more of the N-long-chain acyl-basic amino acid derivative and its acid addition salt is 0.001 to 0.2% by weight. Demonstrates sufficient antibacterial action even at low concentrations. In addition, the use of extract or pulverized product of Jiyu, a kind of crude drug, significantly reduces discomfort such as irritation and sensitization to the skin, or stinging, tingling, and tingling during use. Can.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
INDUSTRIAL APPLICABILITY The invention according to the present invention is particularly useful for a system containing a large amount of water or an oil-in-water emulsification system in which the external phase is an aqueous phase. Makeup base lotion, foundation, emulsified eye color or cheek color, aqueous suspension or emulsified eye liner, makeup cosmetics such as mascara, cleansing lotions, cleansing gels, cleaning cosmetics such as liquid soaps, shampoos, It can be provided as a hair cosmetic such as a hair rinse.
[0017]
【Example】
Further, features of the present invention will be described in detail with reference to examples.
[0018]
[Example 1] Lotion
Figure 0003568077
Production method: The components (1) to (7) are sequentially added to (8) and uniformly mixed.
[0019]
Example 2 Emulsion
Figure 0003568077
Production method: First, the oil phases (1) to (6) are mixed, heated and melted, and kept at 75 ° C. On the other hand, the aqueous phases (7) to (11) are mixed and dissolved by heating to 75 ° C., and the oil phase is added thereto with stirring to emulsify. After cooling, (12) and (13) are added and mixed at 40 ° C.
[0020]
[Example 3] Cream
Figure 0003568077
Production method: The oil phase components (1) to (7) are mixed and heated to 75 ° C. On the other hand, the aqueous phase components (8) to (10) were mixed and heated to 75 ° C., and the oil phase was added thereto to emulsify. After cooling, (11) and (12) were added at 40 ° C. I do.
[0021]
[Example 4] Makeup base cream
Figure 0003568077
Production method: (10) to (12) are kneaded in (4), added to the aqueous phase of (5) to (7), mixed, and heated to 70 ° C. On the other hand, the oil phase components (1) to (3) are mixed and heated to 70 ° C., and this is added to the aqueous phase with stirring to emulsify. After emulsification, cool and add (8) and (9) at 40 ° C.
[0022]
[Example 5] Emulsion foundation
Figure 0003568077
Production method: After mixing the pigments of (15) to (19), the mixture is pulverized by a pulverizer. (12) is heated to 70 ° C., (8) is added to swell well, to which (7) previously dispersed in (9) is added, and (10) and (11) are further added. Allow to dissolve. The oil phases (1) to (6) are mixed, heated and melted to 80 ° C. The pigment is added to the aqueous phase with stirring, the temperature is adjusted to 75 ° C. through a colloid mill, the oil phase is added with stirring to emulsify, and after cooling, (13) and (14) are added at 40 ° C.
[0023]
[Example 6] Creamy foundation
Figure 0003568077
Production method: After mixing the pigments of (13) to (19), the mixture is pulverized by a pulverizer. (7) to (10) are mixed, dissolved and heated. The oil phases (1) to (6) are mixed and dissolved by heating to 80 ° C. The pigment is added to the aqueous phase with stirring, the temperature is adjusted to 75 ° C. through a colloid mill, the oil phase is added with stirring to emulsify, and after cooling, (11) and (12) are added at 40 ° C.
[0024]
[Example 7] Emulsion type eye color
Figure 0003568077
Production method: The aqueous phases (5) to (8) are mixed, dissolved and heated, and (12) and (13) previously mixed and pulverized are added and dispersed, and heated to 75 ° C. (1) to (4), which were previously mixed and heated to make it uniform, were added with stirring to emulsify, and after cooling, (9) to (11) were added and mixed.
[0025]
[Example 8] Emulsion type teak color
Figure 0003568077
Production method: The aqueous phases (10) to (13) are mixed, dissolved and heated, and previously mixed and ground (16) and (17) are added and dispersed, and heated to 75 ° C. (1) to (9), which were previously mixed and heated to make it uniform, were added with stirring to emulsify, and after cooling, (14) and (15) were added and mixed.
[0026]
[Example 9] Emulsion type eyeliner
Figure 0003568077
Production method: The oil phase components (1) to (4) are mixed and heated to dissolve. The aqueous phases (5) to (8) are mixed, heated, and added with stirring to emulsify. Next, (11) to (13) are added to the emulsion, dispersed through a colloid mill, cooled, and (9) and (10) are added at 40 ° C.
[0027]
[Example 10] Aqueous suspension type mascara
Figure 0003568077
Production method: (2) to (5) are added to (9) to dissolve, and then (6) to (8) are added and dispersed through a colloid mill. (1) is added to this, and it is dispersed uniformly.
[0028]
[Example 11] Shampoo
Figure 0003568077
Production method: (1) to (6) are sequentially added to (7) and uniformly mixed and dissolved.
[0029]
[Example 12] Hair rinse
Figure 0003568077
Production method: (3) to (5) are added to (8), and the mixture is heated to 70 ° C. On the other hand, (1) and (2) are mixed and dissolved, and heated to 70 ° C. This oil phase is gradually added to the previously prepared aqueous phase while stirring, pre-emulsified, homogenized by adding a homomixer, cooled, and (6) and (7) are added at 40 ° C.
[0030]
[Example 13] Face wash with scrub
Figure 0003568077
Production method: After mixing and dissolving the oil phase of (1) to (6) and the aqueous phase of (8) and (9) at 75 ° C. respectively, the aqueous phase is added to the oil phase for saponification. After cooling, (10) and (11) are added and mixed at 40 ° C.
[0031]
Next, the above Examples 1 to 13 were evaluated for antibacterial activity, skin irritation and discomfort during use. At the same time, the comparative examples shown in Table 1 were similarly evaluated.
[0032]
[Table 1]
Figure 0003568077
[0033]
(1) As an evaluation bacteria antibacterial activity, E. coli (Escherichia coli), Staphylococcus aureus (Staphylococcus aureus), Pseudomonas aeruginosa (Pseudomonas aeruginosa), using a Candida (Candida albicans), black mold (Aspergillus niger) as fungi, samples 1g 10 6 bacteria and 10 5 fungi per inoculation were cultured at 37 ° C. and 25 ° C., respectively, and the number of viable bacteria was measured after 2 weeks. In Examples 11, Pseudomonas aeruginosa (Pseudomonas aeruginosa) as bacteria for Example 12 and Comparative Example 11, Comparative Example 12, the above-mentioned Candida Fungi (Candida albicans), black mold (Aspergillus niger) and dandruff fungus (Pityrosporum ovale) using, analogously using acne bacteria as bacteria for examples 13 and Comparative example 13 (Propionibacterium acnes) and vulgaris Myxomycetes (Proteus vulgaris) as the fungus Candida (Candida albicans) and Aspergillus niger (Aspergillus niger) Tested. The antibacterial activity is judged to be sufficient when bacteria are killed after 2 weeks, and when the number of viable bacteria is 1/1000 for fungi. The evaluation results are shown in Tables 2 to 4.
[0034]
[Table 2]
Figure 0003568077
[0035]
From Table 2, in Examples 1 to 10 of the present invention, sufficient antibacterial activity against both bacteria and fungi was observed. On the other hand, in Comparative Examples containing only one of the acid addition salt of the N-long-chain acyl-basic amino acid derivative and Jiyu, sufficient antibacterial activity was confirmed against both bacteria and fungi. Was none.
[0036]
[Table 3]
Figure 0003568077
[0037]
From Table 3, it can be seen that both Example 11 and Example 12 of the present invention show good antibacterial activity against bacteria and fungi. In addition, it has an effective bactericidal effect against dandruff fungi, indicating that it also has an anti-dandruff effect. On the other hand, in the comparative example, sufficient antibacterial activity was not recognized for both bacteria and fungi.
[0038]
[Table 4]
Figure 0003568077
[0039]
Table 4 also shows that Example 13 of the present invention shows a sufficient antibacterial activity and exhibits a good bactericidal effect. In addition, it has a bactericidal effect against acne bacteria, which indicates that it also has an acne preventive effect. On the other hand, Comparative Example 13 did not show sufficient antibacterial activity.
[0040]
(2) Evaluation of skin irritation Each sample was subjected to a 48-hour obstruction sticking test using 20 male panelists, evaluated according to the criteria shown in Table 5, and the average value of the skin irritation index of 20 individuals was determined. . In addition, about Example 11-Example 13 and Comparative Example 11-Comparative Example 13, it evaluated with 1.0 weight% aqueous solution.
[0041]
[Table 5]
Figure 0003568077
[0042]
(3) Evaluation of discomfort during use A group of 20 female panelists was asked to use each sample in each group, and the pain, tingling, and tingling sensation felt between 30 seconds and 1 minute after application. Such discomfort was evaluated. The evaluation results were "very strong; 5 points", "somewhat strong; 4 points", "feeling; 3 points", "a little feeling; 2 points", "subtle feeling; 1 point", and "not feeling". ; 0 point ", and the average value of 20 persons was shown. In addition, also about this evaluation, about Example 11-Example 13 and Comparative Example 11-Comparative Example 13, it evaluated using 1.0 weight% aqueous solution. The above results are summarized in Table 6.
[0043]
[Table 6]
Figure 0003568077
[0044]
In Table 6, in Examples of the present invention, skin irritation and discomfort during use were scarcely recognized in any case, and the degree of discomfort during use was such that some panelists felt subtle. In Examples 1, 3 and 9 containing 0.2% by weight of the acid addition salt of the N-long-chain acyl basic amino acid derivative, the value was extremely low. On the other hand, Comparative Example 1 containing 0.2% by weight of an acid addition salt of an N-long-chain acyl-basic amino acid derivative and 7.0% by weight of ethanol, 0.15% by weight of the addition salt and 10. In Comparative Example 4 containing 0% by weight and Comparative Example 10 containing 015% by weight of the addition salt and the resin emulsion, slight erythema or edema was observed, and the skin irritation index was slightly increased. Moreover, panelists who felt discomfort in the group using these increased. Furthermore, even in the group using Comparative Example 11 which was a shampoo containing 0.05% by weight of the addition salt, considerable panelists felt discomfort during use. In Comparative Examples 12 and 13 having a high surfactant content, the skin irritation index and the discomfort during use were high.
[0045]
【The invention's effect】
As described in detail above, the antimicrobial action of the present invention is synergistically enhanced, and furthermore, the antimicrobial property which is not only irritating to the skin but also hardly causes discomfort such as piercing pain, tingling and tingling during use. Cosmetics could be obtained.

Claims (2)

一般式(1),一般式(2)及び一般式(3)で示されるN−長鎖アシル塩基性アミノ酸誘導体及びその酸付加塩より選ばれる1種又は2種以上と、地楡の抽出物又は粉砕物を併用することを特徴とする、抗菌性低刺激化粧料。
Figure 0003568077
Figure 0003568077
Figure 0003568077
(但し、一般式(1)〜一般式(3)中、RCOは炭素数6〜20の飽和又は不飽和脂肪酸残基、Xは−NH,−OCH,−OC,−OC,−OC又は−OCHを示し、一般式(2)中、nは3又は4を示す。)
One or more selected from N-long-chain acyl-basic amino acid derivatives represented by the general formulas (1), (2) and (3) and acid addition salts thereof, and an extract of Jiyu Or an antibacterial and hypoallergenic cosmetic characterized by using a ground product together.
Figure 0003568077
Figure 0003568077
Figure 0003568077
(However, in the general formulas (1) to (3), RCO is a saturated or unsaturated fatty acid residue having 6 to 20 carbon atoms, and X is -NH 2 , -OCH 3 , -OC 2 H 5 , -OC 3 H 7 , —OC 4 H 9 or —OCH 2 C 6 H 5 , and in the general formula (2), n represents 3 or 4.)
N−長鎖アシル塩基性アミノ酸誘導体及びその酸付加塩の1種又は2種以上の配合量が、0.001〜0.5重量%、地楡の抽出物又は粉砕物の配合量が、0.01〜20.0重量%であることを特徴とする請求項1に記載の抗菌性低刺激化粧料。One or more of the N-long-chain acyl-basic amino acid derivative and the acid addition salt thereof is contained in an amount of 0.001 to 0.5% by weight, The antibacterial and hypoallergenic cosmetic according to claim 1, characterized in that the amount is 0.01 to 20.0% by weight.
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US7758851B2 (en) 2001-08-09 2010-07-20 Laboratorios Miret, S.A. Preservative systems and their use in cosmetic preparations
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